Finding the Fourth Proportional to 2,870.56, 3,960.36 and 1,876.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.56 : 3,960.36 = 1,876.42 : x
2. Step 2: Convert to fraction form
   2,870.56/3,960.36 = 1,876.42/x
3. Step 3: Cross multiply
   2,870.56x = 3,960.36 × 1,876.42
4. Step 4: Simplify right side
   2,870.56x = 7,431,288.81
5. Step 5: Solve for x
   x = 7,431,288.81/2,870.56
6. Step 6: Final answer
   x = 2,588.80